1. A temporary truce that involves an agreement to stop firing is called a ..........-fire.

2. Diseases meant for use against the enemy during wartime are known as .......... weapons.

3. Weapons that employ incapacitating or lethal poisons/chemicals are called .......... weapons.

4. Weapons that are built to release nuclear energy are known as .......... weapons.

5. Land armies, for hundreds of years, have extensively used .......... in battle. They are accurate, quick to reload, and the bullets released from them can travel several miles.

6. An explosive device that detonates by impact, signal, timer, or by other means is called a .......... .

7. The branch of military concerned with land warfare is the .......... .

8. The branch of the American military concerned with warfare at sea is called the .......... .

9. The branch of the American military that focuses on warfare and defense in the air is called the .......... .

10. People have used .......... against each other since the beginning of time. They have been used to gain territory, money, power as well as many other reasons.